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Medical instrument for interventional therapy

A medical device and interventional therapy technology, applied in the field of medical devices, can solve the problem of the large protruding degree of the fixing and connecting devices, and achieve the effect of simplifying the product structure and production process, reducing the impact and reducing the release.

Active Publication Date: 2015-03-25
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a medical device with a fixing and connecting device for interventional treatment, so as to solve the problem that the fixing and connecting device of the implanted medical device in the prior art protrudes outward or its The degree of protrusion is relatively large, so that the outer surface near the fixing and connecting device is smoother, while retaining the safety, convenience and controllability of the threaded connection

Method used

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  • Medical instrument for interventional therapy
  • Medical instrument for interventional therapy
  • Medical instrument for interventional therapy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] like Figure 4 As shown, the medical device of this embodiment includes at least one braided body 5 and at least one fixing and connecting device connected to the braided body 5. The braided body 5 is composed of a plurality of braided wires, usually braided with metal wires, such as nickel-titanium alloy Silk, so that the braided body 5 has excellent elasticity. the ends of multiple braided filaments, i.e. Figure 4 The fixed end 7 of the braided wire can be collected and fixed on the fixing and connecting device. In the prior art, medical devices with such structural features include vascular plugs, patent ductus arteriosus (PDA) occluders, atrial septal defect (ASD) occluders, patent foramen ovale (PFO) occluders , left atrial appendage (LAA) occluder, thrombus filter and vascular stent, etc. The remaining parts of the medical device are only connected to the braided body 5 and not connected to the fixing and connecting device, so the remaining parts of the medica...

Embodiment 2

[0052] like Figure 6 and Figure 7 As shown, the fixing and connecting device of the double-disc occluder is also composed of a short nut 11, a short sleeve 12 and an integral welding part 13 between the two. The main difference between it and Embodiment 1 is that the fixing and connecting device is inside the braided body 5, and the integral welding part 13 includes an annular small step 41, and the preferred height of the small step 41 is 0.2-0.8 mm. The manufacturing method of this embodiment is similar to that described in Embodiment 1, except that when the braided body 5 is still in the state of a braided mesh pipe with unfixed ends, the fixing and connecting device is first made, and the outer end surface of the short nut 11 is slightly Protrude from the outer end surface of the short sleeve 12 to form a small step 41, and the part of the braided wire fixed end 7 exposed outside the short sleeve 12 leans on the side wall of the short nut 11 (just on the small step 41),...

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Abstract

The invention relates to a medical instrument for interventional therapy. The medical instrument comprises at least one fabric body and a fixing and connecting device, wherein each fabric body is composed of a plurality of knitting yarns, and a part of the knitting yarns is provided with knitting yarn fixing ends; and the fixing and connecting device comprises an inner sleeve and an outer sleeve, the inner sleeve is fixed in the outer sleeve, the knitting yarn fixing ends are fixed between the inner sleeve and the outer sleeve, the inner sleeve is completely hollow and two ends of the inner sleeve are open. The medical instrument solves the problems that an existing fixing and connecting device for the fabric body planted into the medical instrument protrudes outwards or protrudes much and the like, so that the outer surface near the fixing and connecting device is flatter, and safe, convenient and controllable threaded connection manner is reserved.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical device which is transmitted to a selected part of a human body by means of an interventional catheter technology. Background technique [0002] Using interventional methods to treat diseases through catheter technology is currently using more and more therapeutic methods. Catheter interventional therapy places various materials, instruments and drugs into the heart, arteriovenous blood vessels of the human body. [0003] Such as the placement of occluders (such as atrial septal defect (ASD) occluder, ventricular septal defect (VSD) occluder, patent ductus arteriosus (PDA) occluder, patent foramen ovale (PFO) occluder, etc. Occluder, etc.) to the defect site of the heart to block the defect to treat congenital heart disease. This is a widely used interventional medical device, usually through the threaded connection between the device and the pusher, the pusher is delivered to the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/00A61F2/02
Inventor 李安宁
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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